Yamaguchi 1st district

Yamaguchi 1st district (山口[県第]1区, Yamaguchi[-ken dai-]ikku) is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It is located in Yamaguchi and covers the prefectural capital Yamaguchi (without the former town of Atō), parts of the city of Shūnan (the area of former municipalities Tokuyama city, Shinnan'yō city, Kano town) and the city of Hōfu. As of September 2012, 359,151 eligible voters were resident in the district.[2]

Yamaguchi 1st District
Parliamentary constituency
for the Japanese House of Representatives
Numbered map of Yamaguchi Prefecture
single-member districts
PrefectureYamaguchi
Proportional DistrictChūgoku
Electorate362,270 (2017)[1]
Major settlementsYamaguchi, Shūnan, and Hōfu
Current constituency
PartyLDP
RepresentativeMasahiko Kōmura

Before the electoral reform of the 1990s, the area had been part of the five-member Yamaguchi 2nd district which covered roughly the Eastern half of the prefecture and had been the former district of LDP presidents Nobusuke Kishi and Eisaku Satō. Another representative from the pre-reform 2nd district for the LDP was former four-term Tokuyama city mayor Sakahiko Kōmura. When Kōmura retired, his fourth son Masahiko won a seat in the district in 1980 and defended it in all pre-reform elections. After the electoral reform, Masahiko Kōmura took over the new single-member 1st district for the LDP. The main opposition NFP and the newly founded DPJ did not even nominate candidates in the first post-reform election of 1996, his only challengers were a Communist and an unaffiliated independent. In subsequent elections, the enlarged/"New" DPJ did nominate candidates; but Kōmura held onto the seat by large margins, even in the countrywide DPJ victory of 2009. The district remains – like two other of Yamaguchi's districts – an unbroken "conservative kingdom" (hoshu ōkoku). In the 2017 election Masahiko Kōmura retired, his eldest son Masahiro extended the streak with a two-thirds majority in his first election.

Kōmura was a minister in several cabinets in the 1990s and 2000s (Murayama, Obuchi, Mori II, Fukuda, Abe I). From 2000 to 2012, Kōmura led the Banchō Seisaku Kenkyūjo (previously Kōmoto faction, now Ōshima faction), one of the smaller, but well-established factions of the LDP that traces its roots to the centrist Reform Party and the pre-war Constitutional Democratic Party. In 2012, LDP president Shinzō Abe (Machimura faction, also from Yamaguchi) nominated him to succeed fellow faction member Tadamori Ōshima as vice president of the party.

List of representatives
Representative Election Party Term Notes
Masahiko Kōmura 1996 Liberal Democratic Party 1996– Incumbent
2000
2003
2005
2009
2012
2014
Masahiro Kōmura 2017

Recent results
2021[3]
Party Candidate Votes % ±%
Liberal Democratic Masahiro Kōmura 118,882 70.1 Increase1.0
CDP Kazuya Ouchi 50,684 29.9 Increase10.9
Turnout 48.50 Decrease5.93
Liberal Democratic hold
2017[4]
Party Candidate Votes % ±%
LDP - Kōmeitō Masahiro Kōmura 133,221 69.1
Kibo Kazuya Ouchi 36,582 19.0
JCP Hiroshi Goto 17,924 9.3
HRP Miwako Kawai 5,070 2.6
Turnout 197,192 54.43
2014[5]
Party Candidate Votes % ±%
Liberal Democratic Masahiko Kōmura 120,084 68.1 Increase2.2
Innovation Tsutomu Nakamura 39,375 22.3
Communist Naoko Fujii 16,890 9.6 Increase4.8
Turnout 50.63 Decrease7.51
Liberal Democratic hold
2012[6]
Party Candidate Votes % ±%
LDP (NK) Masahiko Kōmura 133,776 65.9 +8.9
TPJ (NPD) Tetsunari Iida 35,622 17.6 new
DPJ Satoshi Tomimura 23,813 11.7 new
JCP Tomiyuki Uonaga 9,753 4.8 new
2009[7]
Party Candidate Votes % ±%
LDP Masahiko Kōmura 142,103[nb 1] 57.0 -6.8
DPJ Tsutomu Takamura 94,253[nb 1] 37.8 new
JCP Sadayoshi Yoshida 10,114 4.1 new
HRP Jun'ichi Murata 2,889 1.2 new

Note:

  1. Decimals from anbunhyō omitted

References
  1. "衆議院小選挙区 - 確定投票状況" [House of Representatives election district - Fixed Vote Status]. Yamaguchi Prefecture Election Commission (in Japanese). 2017.
  2. MIC: 平成24年9月2日現在選挙人名簿及び在外選挙人名簿登録者数>選挙区ごとの選挙人名簿及び在外選挙人名簿登録者数等 (in Japanese)
  3. 開票速報 小選挙区：山口- 2021衆議 (in Japanese). NHK. Retrieved 8 July 2022.
  4. Asahai Shimbun: election results in Yamaguchi's single-member districts
  5. 2014年12月14日(日) 投票 小選挙区 山口１区 (in Japanese). NHK. Retrieved 8 July 2022.
  6. 総選挙2012>開票結果 小選挙区 山口. Yomiuri Shimbun (in Japanese). Retrieved 2013-10-09.
  7. ２００９総選挙 開票結果 小選挙区・山口1区. Asahi Shimbun (in Japanese). Retrieved 2013-10-09.

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